30213012310421 has 4 divisors (see below), whose sum is σ = 30213255427692. Its totient is φ = 30212769193152.

The previous prime is 30213012310417. The next prime is 30213012310457. The reversal of 30213012310421 is 12401321031203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2255208010225 + 27957804300196 = 1501735^2 + 5287514^2 .

It is a cyclic number.

It is not a de Polignac number, because 30213012310421 - 2² = 30213012310417 is a prime.

It is a super-2 number, since 2×30213012310421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213018310421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121372130 + ... + 121620803.

It is an arithmetic number, because the mean of its divisors is an integer number (7553313856923).

Almost surely, 2^{30213012310421} is an apocalyptic number.

It is an amenable number.

30213012310421 is a deficient number, since it is larger than the sum of its proper divisors (243117271).

30213012310421 is a wasteful number, since it uses less digits than its factorization.

30213012310421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243117270.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 30213012310421 its reverse (12401321031203), we get a palindrome (42614333341624).

The spelling of 30213012310421 in words is "thirty trillion, two hundred thirteen billion, twelve million, three hundred ten thousand, four hundred twenty-one".